The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 25, 2024
Filed:
May. 21, 2021
University of Southern California, Los Angeles, CA (US);
Eun Sok Kim, Rancho Palos Verdes, CA (US);
Yongkui Tang, Pasadena, CA (US);
Xuelian Chen, Alhambra, CA (US);
Jiang F. Zhong, Temple City, CA (US);
University of Southern California, Los Angeles, CA (US);
Abstract
A device for contactless, damage-free, high-precision cell and/or particle extraction and transfer through acoustic droplet ejection includes a substrate having a first surface and a second surface and a focused ultrasonic transducer positioned to focus an acoustic wave onto the substrate such that a droplet that includes at least one cell or particle is ejected from the bulk or from the first surface per each actuation of the focused ultrasonic transducer through droplet ejection. The substrate includes cells or particles inside the substrate or on top of the substrate. The focused ultrasonic transducer includes a piezoelectric substrate having a top face and a bottom face, a Fresnel acoustic lens including a plurality of annular rings of air cavities disposed on the top face, and a first patterned circular electrode disposed over the top face and a second patterned circular electrode disposed over the bottom face. The first patterned circular electrode overlaps the second patterned circular electrode.